:root {
  --navy-950: #071a36;
  --navy-900: #0b2854;
  --navy-700: #174a88;
  --blue-600: #1466c3;
  --blue-100: #eaf3ff;
  --slate-900: #172033;
  --slate-700: #45546c;
  --slate-500: #6f7d92;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --surface: #ffffff;
  --canvas: #f7f9fc;
  --sidebar-width: 296px;
  --content-width: 960px;
  --header-height: 72px;
  color-scheme: light;
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--slate-900);
  background: var(--canvas);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  color: #fff;
  background: var(--navy-900);
  border-radius: 6px;
  transform: translateY(-150%);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  color: #fff;
  background: linear-gradient(105deg, var(--navy-950), var(--navy-900));
  border-bottom: 1px solid rgba(255, 255, 255, .12);
}
.menu-toggle, .header-actions button { min-height: 36px; color: #fff; background: transparent; border: 1px solid rgba(255,255,255,.22); border-radius: 7px; font: inherit; cursor: pointer; }
.menu-toggle { display: none; width: 40px; font-size: 18px; }
.header-breadcrumb { display: flex; align-items: center; gap: 8px; margin-left: auto; margin-right: 24px; color: #cbd8ea; font-size: 12px; }
.header-breadcrumb a { text-decoration: none; }
.header-actions { display: flex; gap: 8px; }
.header-actions button { padding: 0 12px; font-size: 12px; }
.header-actions button:hover:not(:disabled), .menu-toggle:hover { background: rgba(255,255,255,.1); }
.header-actions button:focus-visible, .menu-toggle:focus-visible { outline: 3px solid rgba(139,194,255,.45); outline-offset: 2px; }
.theme-button:disabled { opacity: .5; cursor: not-allowed; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.search-panel { position: fixed; z-index: 80; inset: 0; padding: 10vh 20px 20px; background: rgba(7,26,54,.52); backdrop-filter: blur(4px); }
.search-panel[hidden] { display: none; }
.search-dialog { max-width: 760px; margin: 0 auto; padding: 24px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 14px; box-shadow: 0 24px 70px rgba(7,26,54,.28); }
.search-heading { display: flex; justify-content: space-between; gap: 20px; }
.search-heading strong { color: var(--navy-950); font-size: 20px; }
.search-heading p { margin: 2px 0 0; color: var(--slate-500); font-size: 13px; }
.search-close { width: 36px; height: 36px; color: var(--slate-700); background: transparent; border: 0; border-radius: 7px; font-size: 24px; cursor: pointer; }
.search-close:hover { background: var(--slate-100); }
.search-field { display: block; margin-top: 20px; }
.search-field input { width: 100%; height: 48px; padding: 0 16px; color: var(--slate-900); background: var(--surface); border: 1px solid var(--slate-300); border-radius: 8px; font: inherit; }
.search-field input:focus { border-color: var(--blue-600); outline: 3px solid rgba(20,102,195,.14); }
.search-layout { margin-top: 22px; display: grid; grid-template-columns: 220px 1fr; gap: 24px; }
.search-layout h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }
.recent-searches { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 7px; }
.recent-searches button { padding: 6px 10px; color: var(--slate-700); background: var(--slate-100); border: 0; border-radius: 999px; cursor: pointer; }
.search-results { margin-top: 10px; }
.search-results > p { color: var(--slate-500); font-size: 13px; }
.search-results a { display: grid; padding: 10px; border-bottom: 1px solid var(--slate-200); text-decoration: none; }
.search-results a:hover { background: var(--slate-100); }
.search-results a span { color: var(--slate-500); font-size: 12px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 11px;
  font-weight: 800;
  background: rgba(255, 255, 255, .08);
}

.brand-copy { display: grid; line-height: 1.2; }
.brand-copy strong { font-size: 17px; letter-spacing: -.01em; }
.brand-copy small { margin-top: 4px; color: #b8c9e3; font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }

.header-meta { display: flex; align-items: center; gap: 12px; color: #d5dfed; font-size: 13px; }
.version { padding: 3px 9px; border: 1px solid rgba(255, 255, 255, .22); border-radius: 999px; }

.academy-shell { min-height: calc(100vh - var(--header-height)); display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); }

.sidebar {
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  padding: 28px 20px;
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--slate-200);
}

.navigation { display: grid; gap: 4px; }
.nav-group { border-bottom: 1px solid var(--slate-100); padding-bottom: 8px; }
.nav-group summary { margin: 8px 6px 4px; padding: 8px 6px; color: var(--navy-900); cursor: pointer; font-size: 12px; font-weight: 800; letter-spacing: .035em; }
.nav-group summary span { display: block; margin-top: 1px; color: var(--slate-500); font-size: 9px; font-weight: 600; letter-spacing: .07em; text-transform: uppercase; }
.nav-group summary:focus-visible { outline: 3px solid rgba(20,102,195,.2); border-radius: 5px; }
.nav-group .nav-link { display: block; }
.nav-label { margin: 22px 12px 8px; color: var(--slate-500); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.nav-label:first-child { margin-top: 0; }
.nav-link { padding: 9px 10px; display: grid; grid-template-columns: 18px 1fr; gap: 10px; align-items: center; color: var(--slate-700); border-radius: 7px; font-size: 14px; font-weight: 600; text-decoration: none; }
.nav-link > span { min-width: 0; }
.nav-link small { display: block; margin-top: 1px; overflow: hidden; color: var(--slate-500); font-size: 9px; font-weight: 500; letter-spacing: .015em; text-overflow: ellipsis; white-space: nowrap; }
.nav-icon { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.nav-link:hover { color: var(--navy-900); background: var(--slate-100); }
.nav-link:focus-visible { outline: 3px solid rgba(20, 102, 195, .25); outline-offset: 1px; }
.nav-link.is-current { color: var(--blue-600); background: var(--blue-100); }
.nav-child { padding-left: 26px; font-size: 13px; }

.content { min-width: 0; padding: 30px 48px 72px; }
.breadcrumb { max-width: var(--content-width); margin: 0 auto 24px; display: flex; gap: 9px; color: var(--slate-500); font-size: 13px; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--blue-600); text-decoration: underline; }
.document { max-width: var(--content-width); margin: 0 auto; }

.document-header { padding: 34px 0 38px; border-bottom: 1px solid var(--slate-200); }
.eyebrow, .panel-kicker { margin: 0 0 8px; color: var(--blue-600); font-size: 12px; font-weight: 800; letter-spacing: .13em; }
h1 { margin: 0; color: var(--navy-950); font-size: clamp(36px, 5vw, 54px); line-height: 1.12; letter-spacing: -.045em; }
.lead { max-width: 760px; margin: 18px 0 0; color: var(--slate-700); font-size: 19px; line-height: 1.78; }
h2 { margin: 0; color: var(--navy-950); font-size: 27px; line-height: 1.3; letter-spacing: -.025em; }
h3 { margin: 15px 0 8px; color: var(--navy-900); font-size: 18px; }
section { scroll-margin-top: 92px; }
.manual-section { padding-top: 64px; }
.welcome-section { padding-top: 0; }
.prose { max-width: 800px; margin-top: 24px; color: var(--slate-700); }
.prose p { margin: 0; }

.intro-panel { margin: 38px 0 60px; display: flex; justify-content: space-between; gap: 40px; padding: 34px 36px; color: #fff; background: var(--navy-900); border-radius: 14px; box-shadow: 0 14px 34px rgba(11, 40, 84, .16); }
.intro-panel h2 { color: #fff; }
.intro-panel p:last-child { margin: 10px 0 0; color: #cfdaea; }
.panel-kicker { color: #8bc2ff; }
.panel-index { align-self: center; color: rgba(255, 255, 255, .2); font-size: 58px; font-weight: 800; line-height: 1; }
.workflow-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); align-items: center; }
.hero-copy { min-width: 0; }
.hero-copy > a { display: inline-block; margin-top: 18px; color: #a9d2ff; font-size: 13px; font-weight: 700; text-decoration: none; }
.hero-copy > a:hover { color: #fff; }
.hero-workflow { min-width: 0; padding: 18px; display: grid; grid-template-columns: 1fr 56px 1fr; align-items: center; background: rgba(255,255,255,.055); border: 1px solid rgba(255,255,255,.14); border-radius: 11px; }
.hero-role > span { display: block; color: #8bc2ff; font-size: 9px; font-weight: 800; letter-spacing: .14em; }
.hero-role ol { margin: 9px 0 0; padding: 0; list-style: none; }
.hero-role li { position: relative; padding: 7px 9px; color: #e8f0fb; background: rgba(255,255,255,.055); border-bottom: 1px solid rgba(255,255,255,.09); font-size: 11px; font-weight: 700; }
.hero-role li:first-child { border-radius: 6px 6px 0 0; }
.hero-role li:last-child { border-bottom: 0; border-radius: 0 0 6px 6px; }
.hero-role li:not(:last-child)::after { content: ""; position: absolute; left: 50%; bottom: -4px; width: 6px; height: 6px; border-right: 1px solid #8bc2ff; border-bottom: 1px solid #8bc2ff; transform: translateX(-50%) rotate(45deg); }
.hero-handoff { display: grid; justify-items: center; gap: 5px; color: #9fb3ce; }
.hero-handoff span { width: 28px; height: 1px; background: rgba(139,194,255,.45); }
.hero-handoff small { font-size: 8px; white-space: nowrap; }

.card-grid { margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.info-card { padding: 26px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 12px; box-shadow: 0 6px 18px rgba(23, 32, 51, .045); }
.info-card p { margin: 0; color: var(--slate-700); font-size: 14px; }
.card-number { color: var(--blue-600); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.home-block { margin-top: 52px; }
.home-priority { margin-top: 30px; }
.home-start-tip { margin-top: 18px; }
.home-start-flow { margin-top: 20px; }
.home-block-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; padding-bottom: 15px; border-bottom: 1px solid var(--slate-200); }
.home-block-heading > p { margin: 0; color: var(--slate-500); font-size: 14px; }
.quick-start-grid { margin-top: 18px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.quick-start-grid a { padding: 22px; color: inherit; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; text-decoration: none; }
.quick-start-grid a:hover { border-color: #adc5df; box-shadow: 0 7px 18px rgba(23,32,51,.055); }
.quick-start-grid span { color: var(--blue-600); font-size: 11px; font-weight: 800; }
.quick-start-grid strong { display: block; margin-top: 8px; color: var(--navy-900); }
.quick-start-grid p { margin: 7px 0 0; color: var(--slate-500); font-size: 13px; }
.home-links { margin-top: 18px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.home-links a { padding: 15px 17px; display: flex; justify-content: space-between; gap: 20px; color: var(--navy-900); background: var(--surface); border: 1px solid var(--slate-200); border-radius: 8px; font-weight: 700; text-decoration: none; }
.home-links a span { color: var(--blue-600); font-size: 12px; font-weight: 600; }
.home-release { padding: 24px; display: flex; justify-content: space-between; align-items: center; gap: 24px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.home-release p { margin: 6px 0 0; color: var(--slate-500); }
.home-release > a { color: var(--blue-600); font-weight: 700; text-decoration: none; white-space: nowrap; }

.learning-path { margin-top: 58px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding-bottom: 16px; border-bottom: 2px solid var(--navy-900); }
.section-heading > p { margin: 0; color: var(--slate-500); font-size: 14px; }
.topic-list { margin: 0; padding: 0; list-style: none; }
.topic-list li { scroll-margin-top: 92px; display: grid; grid-template-columns: 46px 1fr; gap: 16px; align-items: center; padding: 20px 10px; border-bottom: 1px solid var(--slate-200); }
.topic-list > li > span { color: var(--blue-600); font-size: 13px; font-weight: 800; }
.topic-list strong { color: var(--navy-900); font-size: 17px; }
.topic-list p { margin: 2px 0 0; color: var(--slate-500); font-size: 14px; }

.note { margin-top: 46px; padding: 20px 22px; background: #f0f6fd; border-left: 4px solid var(--blue-600); border-radius: 0 8px 8px 0; }
.note strong { color: var(--navy-900); }
.note p { margin: 5px 0 0; color: var(--slate-700); font-size: 14px; }

.workflow-diagram { margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); list-style: none; }
.workflow-diagram li { position: relative; min-width: 0; padding: 20px 14px; text-align: center; background: var(--surface); border-block: 1px solid var(--slate-200); border-left: 1px solid var(--slate-200); }
.workflow-diagram li:first-child { border-radius: 10px 0 0 10px; }
.workflow-diagram li:last-child { border-right: 1px solid var(--slate-200); border-radius: 0 10px 10px 0; }
.workflow-diagram li:not(:last-child)::after { content: "›"; position: absolute; z-index: 2; top: 50%; right: -8px; width: 16px; height: 22px; margin-top: -11px; display: grid; place-items: center; color: var(--blue-600); background: var(--surface); font-size: 22px; }
.workflow-diagram span, .workflow-diagram strong, .workflow-diagram small { display: block; }
.workflow-diagram span { color: var(--blue-600); font-size: 11px; font-weight: 800; }
.workflow-diagram strong { margin-top: 6px; color: var(--navy-900); font-size: 14px; }
.workflow-diagram small { margin-top: 6px; color: var(--slate-500); font-size: 11px; line-height: 1.45; }

.callout { margin-top: 28px; padding: 20px 22px; background: var(--surface); border: 1px solid var(--slate-200); border-left-width: 4px; border-radius: 0 8px 8px 0; }
.callout strong { display: block; margin-bottom: 4px; font-size: 11px; letter-spacing: .12em; }
.callout p { margin: 0; color: var(--slate-700); font-size: 14px; }
.callout.info { border-left-color: #1466c3; background: #f0f6fd; }
.callout.info strong { color: #1466c3; }
.callout.tip { border-left-color: #16845b; background: #eef9f4; }
.callout.tip strong { color: #13704e; }
.callout.note { border-left-color: #64748b; background: #f5f7fa; }
.callout.note strong { color: #475569; }
.callout.warning { border-left-color: #c87814; background: #fff8e8; }
.callout.warning strong { color: #a55b08; }

.guide-grid { margin-top: 24px; display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: start; }
.guide-grid .callout { margin-top: 0; }
.step-list { margin: 18px 0 0; padding: 0; list-style: none; counter-reset: manual-step; }
.step-list li { display: grid; grid-template-columns: 150px 1fr; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--slate-200); }
.step-list b { color: var(--navy-900); }
.step-list span { color: var(--slate-700); }
.step-list.horizontal { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.step-list.horizontal li { display: block; padding: 20px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.step-list.horizontal b, .step-list.horizontal span { display: block; }
.step-list.horizontal span { margin-top: 8px; font-size: 14px; }

.role-table { margin-top: 24px; overflow: hidden; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.role-row { display: grid; grid-template-columns: 140px 1fr 1fr; }
.role-row > * { padding: 15px 18px; border-right: 1px solid var(--slate-200); border-bottom: 1px solid var(--slate-200); }
.role-row > *:last-child { border-right: 0; }
.role-row:last-child > * { border-bottom: 0; }
.role-head { color: var(--navy-900); background: var(--slate-100); font-weight: 800; }
.role-row span { color: var(--slate-700); }

.event-grid { margin-top: 24px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.event-grid article { padding: 20px 16px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.event-grid strong { color: var(--navy-900); }
.event-grid p { margin: 8px 0 0; color: var(--slate-500); font-size: 13px; }
.check-list { margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; list-style: none; }
.check-list li { padding: 16px 18px 16px 46px; position: relative; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 9px; }
.check-list li::before { content: "✓"; position: absolute; left: 18px; color: #16845b; font-weight: 900; }
.faq-list { margin-top: 20px; }
.faq-list details { background: var(--surface); border-bottom: 1px solid var(--slate-200); }
.faq-list summary { padding: 18px 4px; color: var(--navy-900); cursor: pointer; font-weight: 700; }
.faq-list p { margin: 0; padding: 0 4px 20px; color: var(--slate-700); }
.release-entry { margin-top: 22px; display: grid; grid-template-columns: 120px 1fr; gap: 24px; padding: 22px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.release-entry time { color: var(--blue-600); font-size: 13px; font-weight: 800; }
.release-entry h3 { margin-top: 0; }
.release-entry p { margin: 0; color: var(--slate-700); }
.image-block { margin: 24px 0; padding: 16px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; }
.image-block img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.image-block figcaption { margin-top: 10px; color: var(--slate-500); font-size: 13px; text-align: center; }
.code-block { margin: 24px 0; padding: 18px 20px; overflow-x: auto; color: #dbeafe; background: #0b1930; border: 1px solid #203a61; border-radius: 9px; font: 13px/1.7 Consolas, "SFMono-Regular", monospace; }
.error-page { width: min(680px, calc(100% - 40px)); margin: 18vh auto; padding: 42px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 14px; box-shadow: 0 18px 50px rgba(7,26,54,.12); }
.error-page p { color: var(--slate-700); }
.error-page a { display: inline-block; margin-top: 12px; padding: 10px 14px; color: #fff; background: var(--navy-900); border-radius: 7px; text-decoration: none; }
.best-practice { margin-top: 22px; padding: 20px; background: linear-gradient(135deg, #f4f8fd, #fff); border: 1px solid #c8d8eb; border-radius: 9px; }
.best-practice strong { color: var(--navy-900); font-size: 12px; letter-spacing: .09em; }
.best-practice p { margin: 6px 0 0; color: var(--slate-700); }
.related-pages { margin-top: 22px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.related-pages strong { margin-right: 6px; color: var(--slate-500); font-size: 12px; letter-spacing: .08em; }
.related-pages a { padding: 7px 10px; color: var(--blue-600); background: var(--blue-100); border-radius: 6px; font-size: 13px; text-decoration: none; }
.chapter-pager { margin-top: 64px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.chapter-pager a { padding: 18px; color: var(--slate-500); background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; text-decoration: none; }
.chapter-pager a:last-child { text-align: right; }
.chapter-pager strong { display: block; color: var(--navy-900); }
.chapter-pager a:hover { border-color: #adc5df; box-shadow: 0 5px 16px rgba(23,32,51,.06); }

.standard-chapter { --chapter-rule: #d7e1ec; }
.chapter-header { padding-bottom: 30px; border-bottom: 2px solid var(--navy-900); }
.chapter-header h2 { font-size: clamp(32px, 4vw, 44px); letter-spacing: -.04em; }
.chapter-description { max-width: 780px; margin: 16px 0 0; color: var(--slate-700); font-size: 18px; line-height: 1.75; }
.chapter-block { margin-top: 48px; }
.chapter-block-heading { display: grid; grid-template-columns: 38px 1fr; gap: 14px; align-items: start; padding-bottom: 14px; border-bottom: 1px solid var(--chapter-rule); }
.chapter-block-heading > span { width: 30px; height: 30px; display: grid; place-items: center; color: var(--blue-600); background: var(--blue-100); border-radius: 7px; font-size: 11px; font-weight: 800; }
.chapter-block-heading h3 { margin: 0; font-size: 21px; }
.chapter-block-heading p { margin: 3px 0 0; color: var(--slate-500); font-size: 14px; }
.standard-workflow { margin: 22px 0 0; padding: 0; display: grid; list-style: none; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 10px; overflow: hidden; }
.standard-workflow.manager-flow { grid-template-columns: repeat(4, 1fr); }
.standard-workflow.worker-flow { grid-template-columns: repeat(6, 1fr); }
.standard-workflow li { position: relative; min-width: 0; padding: 22px 16px; border-right: 1px solid var(--slate-200); }
.standard-workflow li:last-child { border-right: 0; }
.standard-workflow li:not(:last-child)::before { content: ""; position: absolute; z-index: 1; top: 50%; right: -13px; width: 25px; height: 1px; background: var(--slate-300); }
.standard-workflow li:not(:last-child)::after { content: ""; position: absolute; z-index: 2; top: 50%; right: -8px; width: 7px; height: 7px; background: var(--surface); border-top: 1.5px solid var(--blue-600); border-right: 1.5px solid var(--blue-600); transform: translateY(-50%) rotate(45deg); }
.flow-index, .standard-workflow strong, .standard-workflow small { display: block; }
.flow-index { color: var(--blue-600); font-size: 11px; font-weight: 800; letter-spacing: .08em; }
.standard-workflow strong { margin-top: 8px; color: var(--navy-900); font-size: 15px; }
.standard-workflow small { margin-top: 7px; color: var(--slate-500); font-size: 12px; line-height: 1.55; }
.principle-grid { margin-top: 22px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.principle-grid article { min-width: 0; padding: 20px 17px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 9px; }
.principle-grid span { color: var(--blue-600); font-size: 11px; font-weight: 800; }
.principle-grid p { margin: 9px 0 0; color: var(--navy-900); font-size: 14px; font-weight: 700; line-height: 1.55; }
.chapter-callout { margin-top: 42px; }
.workflow-faq details { margin-top: 20px; background: var(--surface); border: 1px solid var(--slate-200); border-radius: 9px; }
.workflow-faq summary { padding: 18px 20px; color: var(--navy-900); cursor: pointer; font-weight: 700; }
.workflow-faq details p { margin: 0; padding: 0 20px 20px; color: var(--slate-700); }
.standard-related { margin-top: 38px; padding-top: 20px; border-top: 1px solid var(--slate-200); }
.standard-pager { margin-top: 38px; }

.site-footer { margin-left: var(--sidebar-width); display: flex; justify-content: space-between; gap: 24px; padding: 24px 48px; color: var(--slate-500); background: var(--surface); border-top: 1px solid var(--slate-200); font-size: 12px; }
.site-footer div { display: grid; }
.site-footer strong { color: var(--navy-900); }
.site-footer p { margin: 0; }
.site-footer dl { margin: 0; display: flex; gap: 18px; }
.site-footer dl div { display: flex; gap: 5px; }
.site-footer dt { color: var(--slate-500); }
.site-footer dd { margin: 0; color: var(--navy-900); font-weight: 700; }
.site-footer > a { color: var(--blue-600); text-decoration: none; }
.drawer-backdrop { position: fixed; z-index: 29; inset: var(--header-height) 0 0; background: rgba(7,26,54,.45); }
.drawer-backdrop[hidden] { display: none; }

@media (max-width: 1100px) {
  .site-header { height: 64px; padding: 0 18px; }
  .menu-toggle { display: inline-grid; place-items: center; margin-right: 10px; }
  .header-breadcrumb, .header-meta, .brand-copy small { display: none; }
  .brand { margin-right: auto; }
  .header-actions .theme-button { display: none; }
  .academy-shell { display: block; }
  .sidebar { position: fixed; z-index: 30; top: 64px; left: 0; width: min(86vw, 320px); height: calc(100vh - 64px); padding: 20px; overflow-y: auto; border-right: 1px solid var(--slate-200); transform: translateX(-102%); transition: transform .2s ease; }
  .sidebar.is-open { transform: translateX(0); }
  .navigation { display: grid; width: auto; }
  .content { padding: 22px 20px 52px; }
  .manual-section { padding-top: 46px; }
  .card-grid { grid-template-columns: 1fr; }
  .quick-start-grid, .home-links { grid-template-columns: 1fr; }
  .home-block-heading, .home-release { align-items: start; flex-direction: column; }
  .intro-panel { margin-top: 24px; padding: 24px; }
  .workflow-hero { grid-template-columns: 1fr; }
  .hero-workflow { width: 100%; max-width: 560px; }
  .panel-index { display: none; }
  .section-heading { align-items: start; flex-direction: column; gap: 6px; }
  .workflow-diagram { grid-template-columns: 1fr; }
  .workflow-diagram li { text-align: left; border: 1px solid var(--slate-200); border-bottom: 0; border-radius: 0; }
  .workflow-diagram li:first-child { border-radius: 10px 10px 0 0; }
  .workflow-diagram li:last-child { border-bottom: 1px solid var(--slate-200); border-radius: 0 0 10px 10px; }
  .workflow-diagram li:not(:last-child)::after { top: auto; right: 18px; bottom: -12px; transform: rotate(90deg); }
  .guide-grid, .check-list { grid-template-columns: 1fr; }
  .step-list.horizontal { grid-template-columns: 1fr; }
  .role-table { overflow-x: auto; }
  .role-row { min-width: 680px; }
  .event-grid { grid-template-columns: repeat(2, 1fr); }
  .release-entry { grid-template-columns: 1fr; gap: 8px; }
  .search-panel { padding-top: 70px; }
  .search-layout { grid-template-columns: 1fr; }
  .chapter-pager { grid-template-columns: 1fr; }
  .chapter-header h2 { font-size: 34px; }
  .chapter-description { font-size: 16px; }
  .standard-workflow.manager-flow, .standard-workflow.worker-flow { grid-template-columns: 1fr; }
  .standard-workflow li { border-right: 0; border-bottom: 1px solid var(--slate-200); }
  .standard-workflow li:last-child { border-bottom: 0; }
  .standard-workflow li:not(:last-child)::before { top: auto; right: 25px; bottom: -13px; width: 1px; height: 25px; }
  .standard-workflow li:not(:last-child)::after { top: auto; right: 22px; bottom: -5px; transform: rotate(135deg); }
  .principle-grid { grid-template-columns: 1fr; }
  .site-footer dl { flex-wrap: wrap; }
  .site-footer { margin-left: 0; padding: 22px 20px; flex-direction: column; gap: 8px; }
}

@media (max-width: 560px) {
  .hero-workflow { grid-template-columns: 1fr; gap: 14px; }
  .hero-handoff { grid-template-columns: 1fr auto 1fr; width: 100%; }
  .hero-handoff span { width: 100%; }
  .intro-panel { padding: 22px 20px; }
}

@media print {
  @page { size: A4; margin: 17mm 16mm 18mm; }
  :root { --navy-950: #0a2248; --navy-900: #123568; }
  body { background: #fff; color: #111827; font-size: 10.5pt; }
  .site-header, .sidebar, .breadcrumb, .skip-link { display: none !important; }
  .academy-shell { display: block; min-height: 0; }
  .content { padding: 0; }
  .document { max-width: none; }
  .document-header { padding: 0 0 7mm; }
  .manual-section { padding-top: 12mm; break-before: page; }
  .welcome-section { padding-top: 0; break-before: auto; }
  h1 { font-size: 28pt; }
  h2 { font-size: 17pt; }
  .lead { font-size: 11.5pt; }
  .intro-panel { margin: 8mm 0 10mm; padding: 7mm; color: #111827; background: #f3f6fa; border: 1pt solid #274b7e; border-radius: 0; box-shadow: none; break-inside: avoid; }
  .intro-panel h2, .intro-panel p:last-child { color: #111827; }
  .panel-kicker { color: #174a88; }
  .panel-index { color: #b6c3d3; }
  .card-grid { gap: 4mm; }
  .info-card { padding: 5mm; border-color: #9aa9bb; border-radius: 0; box-shadow: none; break-inside: avoid; }
  .learning-path { margin-top: 10mm; }
  .topic-list li { break-inside: avoid; }
  .workflow-diagram { grid-template-columns: repeat(3, 1fr); gap: 2mm; }
  .workflow-diagram li { border: .7pt solid #9aa9bb !important; border-radius: 0 !important; break-inside: avoid; }
  .workflow-diagram li::after { display: none !important; }
  .standard-workflow.manager-flow, .standard-workflow.worker-flow { grid-template-columns: repeat(2, 1fr); }
  .standard-workflow li { border: .7pt solid #9aa9bb; break-inside: avoid; }
  .standard-workflow li::after { display: none; }
  .standard-workflow li::before { display: none; }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid article, .workflow-faq details { border-color: #9aa9bb; border-radius: 0; break-inside: avoid; }
  .callout, .role-table, .release-entry { border-color: #9aa9bb; border-radius: 0; break-inside: avoid; }
  .guide-grid { grid-template-columns: 1fr; }
  .step-list.horizontal { grid-template-columns: repeat(2, 1fr); }
  .event-grid { grid-template-columns: repeat(3, 1fr); }
  .event-grid article, .step-list.horizontal li, .check-list li { border-color: #9aa9bb; border-radius: 0; break-inside: avoid; }
  .faq-list details { break-inside: avoid; }
  .faq-list details:not([open]) > * { display: block; }
  .note { background: #f5f7fa; border-left-color: #174a88; break-inside: avoid; }
  .site-footer { margin: 12mm 0 0; padding: 4mm 0 0; border-top: 1pt solid #274b7e; color: #475569; }
  a { text-decoration: none; }
}

/* Academy Knowledge Platform Design Language */
@media screen {
  .learning-journey-preview { width: min(100%, 430px); justify-self: end; padding: 28px; color: var(--navy-900); background: rgba(255,255,255,.97); border: 1px solid rgba(255,255,255,.65); border-radius: 20px; box-shadow: 0 28px 70px rgba(0,14,38,.3); }
  .learning-journey-preview > header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
  .learning-journey-preview > header span { color: var(--blue-600); font-size: 9px; font-weight: 850; letter-spacing: .14em; }
  .learning-journey-preview > header em { color: var(--slate-500); font-size: 10px; font-style: normal; }
  .journey-book { margin-top: 24px; display: grid; grid-template-columns: 54px minmax(0,1fr); gap: 16px; align-items: center; }
  .journey-book > span { width: 52px; height: 70px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg,#123c78,#1769c2); border-radius: 4px 10px 10px 4px; font-size: 20px; font-weight: 850; box-shadow: 0 10px 20px rgba(18,60,120,.2); }
  .journey-book small { color: var(--slate-500); font-size: 8px; font-weight: 850; letter-spacing: .11em; }
  .journey-book strong { display: block; margin-top: 5px; font-size: 18px; line-height: 1.35; }
  .journey-scenes { margin: 24px 0 0; padding: 0; display: grid; gap: 0; list-style: none; }
  .journey-scenes li { position: relative; padding: 0 0 17px 43px; display: grid; grid-template-columns: 1fr; }
  .journey-scenes li:last-child { padding-bottom: 0; }
  .journey-scenes li::before { content: ""; position: absolute; left: 14px; top: 28px; bottom: 0; width: 1px; background: var(--slate-200); }
  .journey-scenes li:last-child::before { display: none; }
  .journey-scenes li > span { position: absolute; left: 0; top: 0; width: 29px; height: 29px; display: grid; place-items: center; color: var(--slate-500); background: var(--canvas); border: 1px solid var(--slate-200); border-radius: 50%; font-size: 9px; font-weight: 850; }
  .journey-scenes li.is-current > span { color: #fff; background: var(--blue-600); border-color: var(--blue-600); box-shadow: 0 0 0 5px var(--blue-100); }
  .journey-scenes strong { font-size: 14px; }
  .journey-scenes small { display: block; margin-top: 2px; color: var(--slate-500); font-size: 10px; }
  .learning-journey-preview > p { margin: 24px 0 0; padding-top: 16px; color: var(--slate-500); border-top: 1px solid var(--slate-200); font-size: 10px; line-height: 1.6; }

  :root {
    --navy-950: #07172f;
    --navy-900: #102f5e;
    --blue-600: #1769c2;
    --blue-100: #edf5ff;
    --slate-900: #132038;
    --slate-700: #43526a;
    --slate-500: #6b7a90;
    --slate-200: #e3e9f1;
    --slate-100: #f3f6fa;
    --surface: #fff;
    --canvas: #f7f9fc;
    --sidebar-width: 312px;
    --content-width: 1180px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
  }

  body { background: radial-gradient(circle at 72% 0, rgba(40,117,204,.055), transparent 30%), var(--canvas); }
  .site-header { height: 68px; padding-inline: clamp(22px, 3vw, 52px); background: rgba(7,23,47,.97); backdrop-filter: blur(16px); }
  .brand-mark { border-radius: 12px; background: linear-gradient(145deg, rgba(255,255,255,.16), rgba(255,255,255,.04)); }
  .academy-shell { min-height: calc(100vh - 68px); }
  .sidebar { top: 68px; height: calc(100vh - 68px); padding: 28px 22px 40px; }
  .nav-group { padding-block: 6px 12px; }
  .nav-group summary { font-size: 13px; }
  .nav-group summary span { font-size: 10px; }
  .nav-link { position: relative; min-height: 48px; padding: 10px 12px; border-radius: var(--radius-sm); font-size: 14px; transition: color .18s ease, background .18s ease, transform .18s ease; }
  .nav-link small { margin-top: 2px; font-size: 10px; }
  .nav-link:hover { transform: translateX(2px); }
  .nav-link.is-current::before { content: ""; position: absolute; left: 0; top: 11px; bottom: 11px; width: 3px; border-radius: 999px; background: var(--blue-600); }
  .content { padding: 28px clamp(24px, 4vw, 72px) 96px; }
  .breadcrumb { margin-bottom: 20px; align-items: center; font-size: 13px; }
  .breadcrumb [aria-current="page"] { color: var(--navy-900); font-weight: 700; }
  .document { width: 100%; }
  .manual-section { padding-top: 84px; }
  .welcome-section { padding-top: 0; }

  .academy-hero { position: relative; min-height: 520px; padding: clamp(34px, 5vw, 68px); display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(430px, .96fr); gap: clamp(34px, 5vw, 72px); align-items: center; overflow: hidden; color: #fff; background: linear-gradient(125deg, #07172f 0%, #0d3267 62%, #1559a1 100%); border-radius: var(--radius-lg); box-shadow: 0 24px 70px rgba(7,23,47,.18); }
  .academy-hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px); background-size: 36px 36px; mask-image: linear-gradient(90deg, #000, transparent 78%); pointer-events: none; }
  .academy-hero-copy, .product-preview { position: relative; z-index: 1; min-width: 0; }
  .hero-label { margin: 0 0 18px; color: #91c8ff; font-size: 13px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
  .academy-hero h1 { color: #fff; font-size: clamp(42px, 4.3vw, 66px); letter-spacing: -.055em; }
  .academy-hero .lead { max-width: 620px; margin-top: 22px; color: #cbd9ec; font-size: 18px; line-height: 1.7; }
  .hero-search { height: 60px; margin-top: 32px; padding: 7px 8px 7px 18px; display: grid; grid-template-columns: 22px minmax(0,1fr) auto; gap: 11px; align-items: center; background: #fff; border: 1px solid rgba(255,255,255,.38); border-radius: 14px; box-shadow: 0 12px 36px rgba(0,0,0,.18); }
  .hero-search svg { width: 21px; fill: none; stroke: #6b7a90; stroke-width: 1.8; stroke-linecap: round; }
  .hero-search input { min-width: 0; height: 100%; color: var(--slate-900); background: transparent; border: 0; outline: 0; font-size: 16px; }
  .hero-search button { height: 44px; padding: 0 20px; color: #fff; background: var(--blue-600); border: 0; border-radius: 10px; font-weight: 750; cursor: pointer; }
  .hero-search:focus-within { outline: 3px solid rgba(135,194,255,.32); }
  .hero-categories { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
  .hero-categories a { padding: 7px 11px; color: #d6e6fa; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; font-size: 12px; font-weight: 650; text-decoration: none; transition: background .18s ease, color .18s ease; }
  .hero-categories a:hover { color: #fff; background: rgba(255,255,255,.1); }

  .product-preview { padding: 10px; background: rgba(4,14,30,.52); border: 1px solid rgba(255,255,255,.2); border-radius: 24px; box-shadow: 0 28px 60px rgba(0,0,0,.28); transform: perspective(1200px) rotateY(-2deg); }
  .product-preview-bar { height: 44px; padding: 0 14px; display: flex; align-items: center; justify-content: space-between; color: #d9e8f9; font-size: 11px; }
  .product-brand { font-weight: 800; }
  .product-mode { color: #9bb6d6; }
  .product-preview-body { padding: 22px; color: var(--slate-900); background: #f7f9fc; border-radius: 16px; }
  .product-welcome { display: grid; }
  .product-welcome small { color: var(--slate-500); }
  .product-welcome strong { margin-top: 3px; color: var(--navy-950); font-size: 20px; }
  .product-task { margin-top: 18px; padding: 20px; background: #fff; border: 1px solid #dae4ef; border-radius: 14px; box-shadow: 0 12px 28px rgba(16,47,94,.07); }
  .product-task > div { display: flex; justify-content: space-between; color: var(--slate-500); font-size: 11px; font-weight: 700; }
  .product-task em { padding: 3px 8px; color: #10724c; background: #e9f8f1; border-radius: 999px; font-style: normal; }
  .product-task h2 { margin-top: 8px; font-size: 21px; }
  .product-task button { width: 100%; height: 54px; margin-top: 20px; padding: 0 18px; display: flex; align-items: center; justify-content: space-between; color: #fff; background: linear-gradient(100deg, #1769c2, #0e7ada); border: 0; border-radius: 10px; font-size: 15px; font-weight: 800; }
  .product-task button span { font-size: 21px; }
  .product-task ol { margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(6,1fr); list-style: none; }
  .product-task li { position: relative; min-width: 0; display: grid; justify-items: center; gap: 6px; color: #8896a9; font-size: 8px; text-align: center; }
  .product-task li:not(:last-child)::after { content: ""; position: absolute; top: 11px; left: calc(50% + 13px); width: calc(100% - 26px); height: 2px; background: #dbe4ed; }
  .product-task li.is-done:not(:last-child)::after { background: #1769c2; }
  .product-task li b { z-index: 1; width: 24px; height: 24px; display: grid; place-items: center; background: #edf1f5; border-radius: 50%; font-size: 9px; }
  .product-task li.is-done b, .product-task li.is-current b { color: #fff; background: #1769c2; }
  .product-task li.is-current span { color: #1769c2; font-weight: 800; }
  .product-caption { margin: 14px 2px 0; color: var(--slate-500); font-size: 11px; text-align: center; }

  .home-block { margin-top: 72px; }
  .home-block-heading { padding-bottom: 20px; }
  .home-block-heading h2 { font-size: clamp(28px, 3vw, 38px); }
  .quick-start-grid { gap: 18px; }
  .quick-start-grid a, .info-card, .home-links a, .home-release { border-radius: var(--radius-md); box-shadow: 0 8px 26px rgba(18,45,81,.035); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
  .quick-start-grid a { min-height: 210px; padding: 28px; display: flex; flex-direction: column; }
  .quick-start-grid a:hover, .info-card:hover, .home-links a:hover { transform: translateY(-3px); border-color: #b8cee6; box-shadow: 0 16px 34px rgba(18,45,81,.08); }
  .quick-start-grid strong { font-size: 19px; }
  .quick-start-grid p { font-size: 14px; line-height: 1.7; }
  .quick-start-grid em { margin-top: auto; padding-top: 16px; color: var(--blue-600); font-size: 13px; font-style: normal; font-weight: 750; }
  .info-card { padding: 30px; }
  .home-links a { min-height: 60px; align-items: center; padding: 18px 20px; }

  .section-heading, .chapter-header { align-items: start; padding-bottom: 22px; border-bottom: 1px solid #cfd9e6; }
  .section-heading h2, .chapter-header h2 { font-size: clamp(34px, 3.4vw, 48px); }
  .section-heading > p { max-width: 420px; font-size: 15px; line-height: 1.65; }
  .learning-meta { margin: 22px 0 0; padding: 0; display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); background: #fff; border: 1px solid var(--slate-200); border-radius: 14px; overflow: hidden; }
  .learning-meta div { min-width: 0; padding: 17px 20px; border-right: 1px solid var(--slate-200); }
  .learning-meta div:last-child { border-right: 0; }
  .learning-meta dt { color: var(--slate-500); font-size: 11px; font-weight: 700; }
  .learning-meta dd { margin: 4px 0 0; overflow: hidden; color: var(--navy-900); font-size: 14px; font-weight: 800; text-overflow: ellipsis; white-space: nowrap; }

  .standard-workflow { gap: 12px; background: transparent; border: 0; border-radius: 0; overflow: visible; }
  .standard-workflow li { min-height: 150px; padding: 24px 20px; background: #fff; border: 1px solid var(--slate-200) !important; border-radius: 14px; box-shadow: 0 6px 18px rgba(18,45,81,.035); }
  .standard-workflow li:not(:last-child)::before { right: -13px; width: 13px; background: #aebdce; }
  .standard-workflow li:not(:last-child)::after { right: -11px; background: transparent; }
  .standard-workflow strong { font-size: 16px; }
  .manual-section:not(#home) .standard-workflow small::before { content: "완료 조건"; display: block; margin-bottom: 3px; color: #7e8da1; font-size: 9px; font-weight: 800; letter-spacing: .08em; }
  .chapter-block { margin-top: 58px; }
  .chapter-block-heading { padding-bottom: 18px; }
  .chapter-block-heading h3 { font-size: 24px; }
  .chapter-block-heading p { font-size: 15px; }
  .callout { padding: 23px 25px; border-radius: 0 12px 12px 0; }
  .callout p { font-size: 15px; }
  .faq-list details, .workflow-faq details { border-radius: 12px; }
  .faq-list summary, .workflow-faq summary { min-height: 58px; padding: 18px 20px; }
  .related-pages a { padding: 10px 13px; border-radius: 8px; }
  .learning-next { margin-top: 48px; padding: 26px; display: grid; grid-template-columns: minmax(260px,1fr) repeat(2,minmax(150px,.55fr)); gap: 14px; align-items: stretch; background: linear-gradient(135deg, #f0f6fd, #fff); border: 1px solid #ccdae9; border-radius: var(--radius-md); }
  .learning-next > div { padding: 4px 8px; }
  .learning-next > div span { color: var(--blue-600); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
  .learning-next > div strong { display: block; margin-top: 4px; color: var(--navy-950); font-size: 19px; }
  .learning-next > div p { margin: 4px 0 0; color: var(--slate-500); font-size: 13px; }
  .learning-next > a { padding: 18px; display: flex; justify-content: space-between; align-items: center; color: var(--navy-900); background: #fff; border: 1px solid var(--slate-200); border-radius: 11px; font-weight: 750; text-decoration: none; transition: transform .18s ease, border-color .18s ease; }
  .learning-next > a:hover { transform: translateY(-2px); border-color: #a9c3df; }
  .learning-next > a span { color: var(--blue-600); font-size: 20px; }
  .site-footer { padding-block: 30px; }
}

@media screen and (min-width: 720px) and (max-width: 1100px) {
  .academy-hero { min-height: 0; padding: 34px; grid-template-columns: minmax(0,1fr) minmax(340px,.9fr); gap: 28px; }
  .academy-hero h1 { font-size: 40px; }
  .academy-hero .lead { font-size: 15px; }
  .hero-search { height: 54px; margin-top: 22px; }
  .product-preview-body { padding: 16px; }
  .product-task { padding: 16px; }
  .quick-start-grid, .card-grid { grid-template-columns: repeat(2,1fr); }
  .quick-start-grid a:last-child, .card-grid article:last-child { grid-column: 1 / -1; }
  .standard-workflow.worker-flow, .standard-workflow.manager-flow { grid-template-columns: repeat(2,1fr); }
  .standard-workflow li { border: 1px solid var(--slate-200); }
  .standard-workflow li:not(:last-child)::before, .standard-workflow li:not(:last-child)::after { display: none; }
  .learning-meta { grid-template-columns: repeat(2,1fr); }
  .learning-meta div:nth-child(2) { border-right: 0; }
  .learning-meta div:nth-child(-n+4) { border-bottom: 1px solid var(--slate-200); }
  .learning-next { grid-template-columns: repeat(2,1fr); }
  .learning-next > div { grid-column: 1 / -1; }
}

@media screen and (max-width: 719px) {
  .content { padding: 18px 16px 56px; }
  .breadcrumb { margin-bottom: 14px; overflow: hidden; font-size: 11px; white-space: nowrap; }
  .academy-hero { min-height: 0; padding: 28px 22px 20px; grid-template-columns: 1fr; gap: 22px; border-radius: 18px; }
  .academy-hero h1 { font-size: clamp(34px, 10vw, 44px); }
  .academy-hero h1 br { display: none; }
  .academy-hero .lead { margin-top: 14px; font-size: 16px; line-height: 1.6; }
  .hero-label { margin-bottom: 12px; font-size: 11px; }
  .hero-search { height: 54px; margin-top: 20px; padding-left: 14px; }
  .hero-search button { padding-inline: 15px; }
  .hero-categories { gap: 7px; }
  .hero-categories a { min-height: 38px; display: inline-flex; align-items: center; }
  .product-preview { padding: 7px; border-radius: 19px; transform: none; }
  .product-preview-bar { height: 38px; }
  .product-preview-body { padding: 12px; border-radius: 13px; }
  .product-welcome, .product-caption { display: none; }
  .product-task { margin-top: 0; padding: 13px 12px; }
  .product-task h2 { font-size: 19px; }
  .product-task button { height: 48px; margin-top: 12px; }
  .product-task ol { margin-top: 14px; }
  .product-task li span { font-size: 7px; letter-spacing: -.03em; }
  .home-block { margin-top: 54px; }
  .home-block-heading { gap: 8px; }
  .home-block-heading h2 { font-size: 28px; }
  .home-block-heading > p { font-size: 13px; }
  .quick-start-grid a { min-height: 180px; padding: 24px; }
  .manual-section { padding-top: 64px; }
  .section-heading h2, .chapter-header h2 { font-size: 34px; }
  .section-heading > p { font-size: 14px; }
  .learning-meta { grid-template-columns: repeat(2,1fr); }
  .learning-meta div { padding: 14px; }
  .learning-meta div:nth-child(2) { border-right: 0; }
  .learning-meta div:nth-child(-n+4) { border-bottom: 1px solid var(--slate-200); }
  .learning-meta dd { font-size: 13px; }
  .standard-workflow { gap: 10px; }
  .standard-workflow li { min-height: 0; padding: 20px; }
  .standard-workflow li:not(:last-child)::before, .standard-workflow li:not(:last-child)::after { display: none; }
  .learning-next { padding: 20px; grid-template-columns: 1fr; }
  .learning-next > a { min-height: 58px; }
  .chapter-block-heading h3 { font-size: 21px; }
}

@media screen {
  .knowledge-navigation { display: grid; gap: 5px; align-content: start; }
  .navigation-label { margin: 10px 12px 4px; color: var(--slate-500); font-size: 9px; font-weight: 850; letter-spacing: .14em; }
  .knowledge-navigation .nav-link { width: 100%; min-height: 54px; }
  .nav-action { font: inherit; text-align: left; background: transparent; border: 0; cursor: pointer; }
  .navigation-collection { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--slate-200); }
  .nav-book { grid-template-columns: 34px 1fr; }
  .nav-book-cover { width: 30px; height: 38px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg,#123c78,#1769c2); border-radius: 3px 7px 7px 3px; font-size: 11px; font-weight: 850; box-shadow: 0 5px 12px rgba(18,60,120,.18); }

  .home-discovery { margin-top: 72px; }
  .home-block-heading > a { color: var(--blue-600); font-size: 13px; font-weight: 800; text-decoration: none; white-space: nowrap; }
  .discovery-grid { margin-top: 22px; display: grid; grid-template-columns: minmax(0,1.55fr) minmax(300px,.8fr); gap: 18px; }
  .featured-learning, .continue-card { min-height: 196px; border: 1px solid var(--slate-200); border-radius: 16px; }
  .featured-learning { padding: 24px; display: grid; grid-template-columns: 88px minmax(0,1fr) 42px; gap: 22px; align-items: center; color: inherit; background: #fff; text-decoration: none; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
  .featured-learning:hover { transform: translateY(-3px); border-color: #aac3df; box-shadow: 0 16px 34px rgba(19,48,84,.08); }
  .featured-learning-cover { aspect-ratio: .72; height: 120px; display: grid; place-items: center; color: #fff; background: linear-gradient(145deg,#123c78,#1769c2); border-radius: 4px 11px 11px 4px; font-size: 28px; font-weight: 850; box-shadow: 0 12px 26px rgba(18,60,120,.2); }
  .featured-learning-copy small, .continue-card small { color: var(--blue-600); font-size: 9px; font-weight: 850; letter-spacing: .12em; }
  .featured-learning-copy strong { display: block; margin-top: 6px; color: var(--navy-900); font-size: 24px; letter-spacing: -.025em; }
  .featured-learning-copy p { margin: 7px 0 0; color: var(--slate-600); font-size: 13px; line-height: 1.65; }
  .featured-learning-copy em { display: block; margin-top: 14px; color: var(--slate-500); font-size: 11px; font-style: normal; font-weight: 700; }
  .featured-learning-arrow { width: 38px; height: 38px; display: grid; place-items: center; color: var(--blue-600); background: var(--blue-100); border-radius: 50%; font-size: 20px; }
  .continue-card { padding: 24px; display: grid; grid-template-columns: 42px 1fr; gap: 16px; align-content: center; background: var(--canvas); }
  .continue-icon { width: 40px; height: 40px; display: grid; place-items: center; color: var(--slate-600); background: #fff; border: 1px solid var(--slate-200); border-radius: 11px; font-size: 19px; }
  .continue-card h3 { margin: 6px 0 0; color: var(--navy-900); font-size: 18px; }
  .continue-card p { margin: 7px 0 0; color: var(--slate-600); font-size: 12px; line-height: 1.6; }
  .mock-status { width: max-content; margin: 14px 0 0 58px; padding: 5px 8px; color: var(--slate-500); background: #fff; border: 1px solid var(--slate-200); border-radius: 999px; font-size: 9px; font-weight: 800; }

  .library-section { margin-top: 76px; scroll-margin-top: 90px; }
  .library-shelf { position: relative; margin-top: 26px; padding: 0 10px 22px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
  .library-shelf::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 10px; background: linear-gradient(180deg, #d9e1eb, #b8c4d2); border-radius: 3px 3px 8px 8px; box-shadow: 0 10px 20px rgba(26,48,76,.14); }
  .library-book { position: relative; min-width: 0; min-height: 272px; padding: 26px 22px 20px 34px; display: flex; flex-direction: column; color: #fff; overflow: hidden; border-radius: 8px 18px 18px 8px; text-decoration: none; box-shadow: 0 14px 32px rgba(17,38,67,.16); transition: transform .22s ease, box-shadow .22s ease; }
  .library-book::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 12px; background: rgba(0,0,0,.22); box-shadow: inset -2px 0 rgba(255,255,255,.12); }
  .library-book::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(255,255,255,.12), transparent 45%); pointer-events: none; }
  .library-book.is-available:hover { transform: translateY(-8px); box-shadow: 0 22px 42px rgba(17,38,67,.23); }
  .book-safety { background: linear-gradient(145deg, #123c78, #1769c2); }
  .book-bm { background: linear-gradient(145deg, #17654e, #29946f); }
  .book-plc { background: linear-gradient(145deg, #a86810, #d79224); }
  .book-automation { background: linear-gradient(145deg, #8c3140, #c85061); }
  .book-leadership { background: linear-gradient(145deg, #473b8f, #7161c7); }
  .book-maintenance { background: linear-gradient(145deg, #36505c, #587987); }
  .book-symbol { width: 42px; height: 42px; display: grid; place-items: center; color: rgba(255,255,255,.9); border: 1px solid rgba(255,255,255,.32); border-radius: 10px; font-size: 17px; font-weight: 850; }
  .library-book > div { position: relative; z-index: 1; margin-top: auto; }
  .library-book small { color: rgba(255,255,255,.68); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
  .library-book strong { display: block; margin-top: 5px; font-size: 28px; letter-spacing: -.035em; }
  .library-book p { margin: 7px 0 0; color: rgba(255,255,255,.82); font-size: 12px; line-height: 1.55; }
  .library-book em { position: relative; z-index: 1; margin-top: 18px; color: rgba(255,255,255,.7); font-size: 10px; font-style: normal; font-weight: 700; }

  .book-home { margin-top: 84px; padding: clamp(28px, 4vw, 48px); background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius-lg); box-shadow: 0 18px 50px rgba(18,45,81,.07); scroll-margin-top: 90px; }
  .book-overview { display: grid; grid-template-columns: 250px minmax(0,1fr); gap: 42px; align-items: center; }
  .book-cover { aspect-ratio: .72; padding: 28px 24px; display: flex; flex-direction: column; color: #fff; background: linear-gradient(145deg, #0a244a, #1769c2); border-radius: 7px 18px 18px 7px; box-shadow: 0 20px 42px rgba(10,36,74,.22); }
  .book-cover span { font-size: 9px; font-weight: 800; letter-spacing: .15em; }
  .book-cover strong { margin-top: auto; font-size: 34px; line-height: 1.08; letter-spacing: -.04em; }
  .book-cover small { margin-top: 13px; color: #a9d3ff; font-size: 10px; }
  .book-summary h2 { font-size: clamp(36px, 4vw, 50px); }
  .book-summary > p:not(.eyebrow) { max-width: 650px; margin: 16px 0 0; color: var(--slate-700); font-size: 17px; line-height: 1.75; }
  .book-summary dl { margin: 28px 0 0; padding: 18px 0 0; display: flex; flex-wrap: wrap; gap: 28px; border-top: 1px solid var(--slate-200); }
  .book-summary dl div { min-width: 120px; }
  .book-summary dt { color: var(--slate-500); font-size: 11px; }
  .book-summary dd { margin: 3px 0 0; color: var(--navy-900); font-size: 14px; font-weight: 800; }
  .book-start { margin-top: 24px; min-height: 70px; padding: 14px 16px; display: grid; grid-template-columns: 34px minmax(0,1fr) auto 26px; gap: 12px; align-items: center; color: #fff; background: var(--blue-600); border-radius: 12px; text-decoration: none; box-shadow: 0 12px 24px rgba(23,105,194,.18); }
  .book-start > span { width: 30px; height: 30px; display: grid; place-items: center; color: #fff; border: 1px solid rgba(255,255,255,.3); border-radius: 8px; font-size: 10px; font-weight: 850; }
  .book-start strong { font-size: 14px; }
  .book-start em { color: #d7eaff; font-size: 10px; font-style: normal; }
  .book-start b { font-size: 19px; }
  .learning-modes { margin-top: 46px; display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
  .learning-modes a { min-height: 136px; padding: 22px; display: grid; grid-template-columns: 32px 1fr; align-content: center; column-gap: 12px; color: inherit; background: var(--canvas); border: 1px solid var(--slate-200); border-radius: 14px; text-decoration: none; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
  .learning-modes a:hover { transform: translateY(-3px); background: #fff; border-color: #a9c5e2; }
  .learning-modes span { grid-row: 1 / 3; width: 30px; height: 30px; display: grid; place-items: center; color: var(--blue-600); background: var(--blue-100); border-radius: 8px; font-size: 10px; font-weight: 850; }
  .learning-modes strong { color: var(--navy-900); font-size: 20px; }
  .learning-modes small { color: var(--slate-500); font-size: 12px; }
  .book-chapters { margin-top: 54px; }
  .book-chapters > header { padding-bottom: 18px; display: flex; justify-content: space-between; align-items: end; border-bottom: 2px solid var(--navy-900); }
  .book-chapters h3 { margin: 0; font-size: 28px; }
  .book-chapters > header > span { color: var(--slate-500); font-size: 12px; }
  .book-chapters ol { margin: 0; padding: 0; list-style: none; }
  .book-chapters li { border-bottom: 1px solid var(--slate-200); }
  .book-chapters a { min-height: 86px; padding: 16px 12px; display: grid; grid-template-columns: 42px minmax(0,1fr) auto; gap: 18px; align-items: center; color: inherit; text-decoration: none; transition: background .16s ease, padding .16s ease; }
  .book-chapters a:hover { padding-inline: 18px; background: var(--slate-100); }
  .book-chapters a > span { color: var(--blue-600); font-size: 13px; font-weight: 850; }
  .book-chapters strong, .book-chapters small { display: block; }
  .book-chapters strong { color: var(--navy-900); font-size: 16px; }
  .book-chapters small { margin-top: 3px; color: var(--slate-500); font-size: 12px; }
  .book-chapters em { color: var(--slate-500); font-size: 12px; font-style: normal; }
  .book-platform-link { margin-top: 38px; padding: 24px 26px; display: flex; align-items: center; justify-content: space-between; gap: 24px; color: #fff; background: var(--navy-950); border-radius: 14px; }
  .book-platform-link div span { color: #87c1ff; font-size: 9px; font-weight: 850; letter-spacing: .13em; }
  .book-platform-link div strong { display: block; margin-top: 4px; font-size: 17px; }
  .book-platform-link > a { padding: 12px 16px; color: #fff; border: 1px solid rgba(255,255,255,.28); border-radius: 9px; font-size: 13px; font-weight: 750; text-decoration: none; white-space: nowrap; }
  .my-academy-card { margin-top: 56px; padding: 28px 30px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: var(--canvas); border: 1px dashed #b9c8d9; border-radius: 16px; scroll-margin-top: 90px; }
  .my-academy-card h2 { margin: 5px 0 0; font-size: 25px; }
  .my-academy-card p:not(.eyebrow) { margin: 7px 0 0; color: var(--slate-600); font-size: 13px; }
  .my-academy-card .mock-status { margin: 0; flex: 0 0 auto; }

  .scene-map { position: sticky; z-index: 5; top: calc(var(--header-height) + 8px); margin: 28px 0 0; padding: 8px; display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); gap: 4px; background: rgba(255,255,255,.94); border: 1px solid var(--slate-200); border-radius: 13px; box-shadow: 0 8px 24px rgba(16,44,78,.07); backdrop-filter: blur(12px); }
  .scene-map a { min-height: 46px; padding: 7px 5px; display: grid; place-items: center; gap: 2px; color: var(--slate-500); border-radius: 8px; text-decoration: none; }
  .scene-map a.is-current { color: var(--blue-600); background: var(--blue-100); }
  .scene-map span { font-size: 8px; font-weight: 850; }
  .scene-map strong { font-size: 9px; letter-spacing: .04em; }
  .learning-scene { scroll-margin-top: calc(var(--header-height) + 92px); }
  .scene-opening { margin-top: 54px; padding: clamp(28px,5vw,58px); color: #fff; background: linear-gradient(135deg,#0b2448,#123f7d); border-radius: 20px; }
  .scene-number { margin: 0; color: #78b9ff; font-size: 9px; font-weight: 850; letter-spacing: .14em; }
  .scene-opening h3 { max-width: 760px; margin: 14px 0 0; color: #fff; font-size: clamp(28px,4vw,45px); line-height: 1.13; letter-spacing: -.035em; }
  .scene-opening > p:last-child { max-width: 720px; margin: 20px 0 0; color: #d7e7f8; font-size: 16px; line-height: 1.8; }
  .scene-case { margin-top: 34px; padding: 34px; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); gap: 36px; align-items: center; background: #fff; border: 1px solid var(--slate-200); border-radius: 18px; }
  .scene-case h3 { margin: 10px 0 0; font-size: 28px; }
  .scene-case div > p:last-child { color: var(--slate-600); line-height: 1.75; }
  .scene-case blockquote { margin: 0; padding: 26px; color: var(--navy-900); background: var(--canvas); border-left: 3px solid var(--blue-600); border-radius: 0 12px 12px 0; font-size: 18px; font-weight: 750; line-height: 1.65; }
  .scene-workflow { margin-top: 54px; padding-top: 8px; }
  .scene-workflow::before { content: "SCENE 03 · WORKFLOW"; display: block; margin-bottom: 16px; color: var(--blue-600); font-size: 9px; font-weight: 850; letter-spacing: .14em; }
  .scene-workflow .chapter-block:first-child { margin-top: 0; }
  .scene-complete { margin-top: 42px; padding: 30px; display: grid; grid-template-columns: 58px minmax(0,1fr) auto; gap: 22px; align-items: center; color: #fff; background: linear-gradient(135deg,#143b30,#176b50); border-radius: 18px; }
  .scene-complete > span { width: 54px; height: 54px; display: grid; place-items: center; background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.22); border-radius: 50%; font-size: 25px; }
  .scene-complete .scene-number { color: #9ae4c9; }
  .scene-complete h3 { margin: 6px 0 0; font-size: 23px; }
  .scene-complete p:last-child { margin: 6px 0 0; color: #cee9df; font-size: 13px; }
  .scene-complete a { padding: 13px 16px; color: #fff; border: 1px solid rgba(255,255,255,.32); border-radius: 10px; font-size: 12px; font-weight: 800; text-decoration: none; white-space: nowrap; }
  .mobile-knowledge-nav { display: none; }
}

@media screen and (min-width: 720px) and (max-width: 1100px) {
  .discovery-grid { grid-template-columns: 1fr; }
  .library-shelf { grid-template-columns: repeat(2,1fr); }
  .book-overview { grid-template-columns: 200px minmax(0,1fr); gap: 30px; }
  .book-cover strong { font-size: 28px; }
}

@media screen and (max-width: 719px) {
  .content { padding-bottom: 90px; }
  .site-footer { margin-bottom: 70px; }
  .learning-journey-preview { width: 100%; padding: 22px 19px; justify-self: stretch; border-radius: 16px; }
  .journey-book { margin-top: 19px; }
  .journey-scenes { margin-top: 20px; }
  .learning-journey-preview > p { display: none; }
  .home-discovery { margin-top: 52px; }
  .home-block-heading > a { font-size: 11px; }
  .discovery-grid { grid-template-columns: 1fr; gap: 12px; }
  .featured-learning, .continue-card { min-height: 0; }
  .featured-learning { padding: 18px; grid-template-columns: 66px minmax(0,1fr) 34px; gap: 14px; }
  .featured-learning-cover { height: 92px; font-size: 22px; }
  .featured-learning-copy strong { font-size: 19px; }
  .featured-learning-copy p { display: none; }
  .featured-learning-copy em { margin-top: 9px; font-size: 10px; }
  .featured-learning-arrow { width: 32px; height: 32px; font-size: 17px; }
  .continue-card { padding: 18px; }
  .mock-status { margin-left: 56px; }
  .library-section { margin-top: 56px; }
  .library-shelf { padding-inline: 0; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
  .library-book { min-height: 218px; padding: 20px 16px 17px 27px; }
  .library-book strong { font-size: 23px; }
  .library-book p { display: none; }
  .book-home { margin-top: 62px; padding: 22px 18px; border-radius: 18px; }
  .book-overview { grid-template-columns: 116px minmax(0,1fr); gap: 18px; align-items: start; }
  .book-cover { padding: 16px 13px; }
  .book-cover span { font-size: 6px; }
  .book-cover strong { font-size: 20px; }
  .book-cover small { font-size: 7px; }
  .book-summary h2 { font-size: 29px; }
  .book-summary > p:not(.eyebrow) { margin-top: 10px; font-size: 14px; line-height: 1.6; }
  .book-summary dl { margin-top: 15px; padding-top: 12px; display: grid; gap: 8px; }
  .book-summary dl div { min-width: 0; display: flex; justify-content: space-between; gap: 10px; }
  .book-summary dd { font-size: 12px; text-align: right; }
  .book-start { grid-template-columns: 32px minmax(0,1fr) 22px; }
  .book-start em { display: none; }
  .learning-modes { margin-top: 30px; grid-template-columns: 1fr; gap: 9px; }
  .learning-modes a { min-height: 82px; padding: 16px; }
  .book-chapters { margin-top: 38px; }
  .book-chapters > header { align-items: start; flex-direction: column; gap: 4px; }
  .book-chapters a { min-height: 92px; padding-inline: 4px; grid-template-columns: 30px minmax(0,1fr) auto; gap: 10px; }
  .book-chapters small { font-size: 11px; line-height: 1.45; }
  .book-platform-link { padding: 20px; align-items: stretch; flex-direction: column; }
  .book-platform-link > a { text-align: center; }
  .my-academy-card { padding: 20px; align-items: flex-start; flex-direction: column; }
  .my-academy-card .mock-status { margin: 0; }
  .scene-map { top: calc(var(--header-height) + 5px); margin-inline: -8px; padding: 5px; overflow-x: auto; grid-template-columns: repeat(6,70px); scrollbar-width: none; }
  .scene-map::-webkit-scrollbar { display: none; }
  .scene-map a { min-height: 44px; }
  .scene-opening { margin-top: 34px; padding: 28px 22px; border-radius: 16px; }
  .scene-opening h3 { font-size: 30px; }
  .scene-opening > p:last-child { font-size: 15px; }
  .scene-case { padding: 22px; grid-template-columns: 1fr; gap: 20px; }
  .scene-case h3 { font-size: 24px; }
  .scene-case blockquote { padding: 20px; font-size: 16px; }
  .scene-workflow { margin-top: 38px; }
  .scene-complete { padding: 24px 20px; grid-template-columns: 46px minmax(0,1fr); gap: 15px; }
  .scene-complete > span { width: 44px; height: 44px; }
  .scene-complete h3 { font-size: 20px; }
  .scene-complete a { grid-column: 1 / -1; min-height: 50px; display: grid; place-items: center; }
  .mobile-knowledge-nav { position: fixed; z-index: 25; left: 12px; right: 12px; bottom: max(10px,env(safe-area-inset-bottom)); min-height: 60px; padding: 6px; display: grid; grid-template-columns: repeat(4,1fr); background: rgba(7,26,54,.96); border: 1px solid rgba(255,255,255,.12); border-radius: 17px; box-shadow: 0 14px 35px rgba(0,12,32,.3); backdrop-filter: blur(16px); }
  .mobile-knowledge-nav a { display: grid; place-items: center; align-content: center; gap: 3px; color: #cbd9e9; border-radius: 11px; font-size: 9px; font-weight: 700; text-decoration: none; }
  .mobile-knowledge-nav a:active { color: #fff; background: rgba(255,255,255,.1); }
  .mobile-knowledge-nav svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.7; }
}